ASPHYXIATE
suffocate, stifle, asphyxiate
(verb) be asphyxiated; die from lack of oxygen; “The child suffocated under the pillow”
suffocate, stifle, asphyxiate, choke
(verb) impair the respiration of or obstruct the air passage of; “The foul air was slowly suffocating the children”
smother, asphyxiate, suffocate
(verb) deprive of oxygen and prevent from breathing; “Othello smothered Desdemona with a pillow”; “The child suffocated herself with a plastic bag that the parents had left on the floor”
Source: WordNet® 3.1
Verb
asphyxiate (third-person singular simple present asphyxiates, present participle asphyxiating, simple past and past participle asphyxiated)
(transitive) To smother or suffocate someone.
(intransitive) To be smothered or suffocated.
Source: Wiktionary
As*phyx"i*ate, v. t.
Definition: To bring to a state of asphyxia; to suffocate.
Note: [Used commonly in the past pple.]
Source: Webster’s Unabridged Dictionary 1913 Edition